Dr.Johnson hypothesizes that NutraSweet reduces short-term memory.In order to test her hypothesis she gives 10 subjects a beverage containing NutraSweet (treatment group)and 10 subjects a beverage without NutraSweet (control group).She then measures the subject's ability to recall a list of numbers.In this study the independent variable is _______and the dependent variable is______.
A)whether the subjects received NutraSweet or placebo: recall for a list of numbers
B)recall for a list of numbers: whether the subjects received NutraSweet
C)the subjects ability to recall: the drink with NutraSweet
D)Both b & c
E)None of these

Question

Quizplus · Accepted Answer

The independent variable is the variable that is manipulated by the experimenter, and the dependent variable is the variable that is measured. In this study, the independent variable is whether the subjects received NutraSweet or placebo, and the dependent variable is recall for a list of numbers.

DrJohnson Hypothesizes That NutraSweet Reduces Short-Term Memory